On Sat, Dec 4, 2021 at 11:28 PM Scott Kitterman <[email protected]>
wrote:

> I think the addition of the PSD flag to support organizational domain
> determination is a good change.  I have some quibbles about the exact
> definition though:
>
> >   psd:  A flag indicating whether the domain is a PSD. (plain-text;
> >             OPTIONAL; default is 'n').  Possible values are:
> >
> >             y:  Domains on the PSL that publish DMARC policy records
> SHOULD
> >                include this tag with a value of 'y' to indicate that the
> >                domain is a PSD.  This information will be used during
> policy
> >                discovery to determine how to apply any DMARC policy
> records
> >                that are discovered during the tree walk.
> >
> >             n:  The default, indicating that the DMARC policy record is
> >                published for a domain that is not a PSD.
>
> Why does this need a value at all?  Why can't the flag just be psd?
>
> [snip]
>
> All that's needed is to strike "with a value of 'y'" from the second
> sentence.
>
> I think this is simpler and clearer.
>
>
I don't disagree that it's simpler and clearer. However, expressing it as
psd=(y|n) was chosen to be consistent with the expression of every other
tag currently defined for DMARC records, all of which "follow the
extensible "tag-value" syntax for DNS-based key records defined in DKIM" as
declared in section 5.3, General Record Format.

This doesn't mean we can't break new ground here, but doing so would
require rewriting the beginning of section 5.3, as well.


-- 

*Todd Herr * | Technical Director, Standards and Ecosystem
*e:* [email protected]
*m:* 703.220.4153

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